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control.h
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1
11/*
12 * This library is free software; you can redistribute it and/or modify
13 * it under the terms of the GNU Lesser General Public License as
14 * published by the Free Software Foundation; either version 2.1 of
15 * the License, or (at your option) any later version.
16 *
17 * This program is distributed in the hope that it will be useful,
18 * but WITHOUT ANY WARRANTY; without even the implied warranty of
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 * GNU Lesser General Public License for more details.
21 *
22 * You should have received a copy of the GNU Lesser General Public
23 * License along with this library; if not, write to the Free Software
24 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
25 *
26 */
27
28#if !defined(__ASOUNDLIB_H) && !defined(ALSA_LIBRARY_BUILD)
29/* don't use ALSA_LIBRARY_BUILD define in sources outside alsa-lib */
30#warning "use #include <alsa/asoundlib.h>, <alsa/control.h> should not be used directly"
31#include <alsa/asoundlib.h>
32#endif
33
34#ifndef __ALSA_CONTROL_H
35#define __ALSA_CONTROL_H
37#ifdef __cplusplus
38 extern "C" {
39#endif
40
49#define SND_CONTROL_DLSYM_VERSION _dlsym_control_001
50
52 typedef struct snd_aes_iec958 {
53 unsigned char status[24];
54 unsigned char subcode[147];
55 unsigned char pad;
56 unsigned char dig_subframe[4];
57} snd_aes_iec958_t;
58
85 typedef struct _snd_ctl_card_info snd_ctl_card_info_t;
86
88 typedef struct _snd_ctl_elem_id snd_ctl_elem_id_t;
89
159 typedef struct _snd_ctl_elem_list snd_ctl_elem_list_t;
160
162 typedef struct _snd_ctl_elem_info snd_ctl_elem_info_t;
163
216 typedef struct _snd_ctl_elem_value snd_ctl_elem_value_t;
217
219 typedef struct _snd_ctl_event snd_ctl_event_t;
220
222 typedef enum _snd_ctl_elem_type {
224 SND_CTL_ELEM_TYPE_NONE = 0,
226 SND_CTL_ELEM_TYPE_BOOLEAN,
228 SND_CTL_ELEM_TYPE_INTEGER,
230 SND_CTL_ELEM_TYPE_ENUMERATED,
232 SND_CTL_ELEM_TYPE_BYTES,
234 SND_CTL_ELEM_TYPE_IEC958,
236 SND_CTL_ELEM_TYPE_INTEGER64,
237 SND_CTL_ELEM_TYPE_LAST = SND_CTL_ELEM_TYPE_INTEGER64
238} snd_ctl_elem_type_t;
239
241 typedef enum _snd_ctl_elem_iface {
243 SND_CTL_ELEM_IFACE_CARD = 0,
245 SND_CTL_ELEM_IFACE_HWDEP,
247 SND_CTL_ELEM_IFACE_MIXER,
249 SND_CTL_ELEM_IFACE_PCM,
251 SND_CTL_ELEM_IFACE_RAWMIDI,
253 SND_CTL_ELEM_IFACE_TIMER,
255 SND_CTL_ELEM_IFACE_SEQUENCER,
256 SND_CTL_ELEM_IFACE_LAST = SND_CTL_ELEM_IFACE_SEQUENCER
257} snd_ctl_elem_iface_t;
258
260 typedef enum _snd_ctl_event_type {
262 SND_CTL_EVENT_ELEM = 0,
263 SND_CTL_EVENT_LAST = SND_CTL_EVENT_ELEM
264}snd_ctl_event_type_t;
265
268#define SND_CTL_EVENT_MASK_REMOVE (~0U)
270#define SND_CTL_EVENT_MASK_VALUE (1<<0)
272#define SND_CTL_EVENT_MASK_INFO (1<<1)
274#define SND_CTL_EVENT_MASK_ADD (1<<2)
276#define SND_CTL_EVENT_MASK_TLV (1<<3)
277
279#define SND_CTL_NAME_NONE ""
281#define SND_CTL_NAME_PLAYBACK "Playback "
283#define SND_CTL_NAME_CAPTURE "Capture "
284
286#define SND_CTL_NAME_IEC958_NONE ""
288#define SND_CTL_NAME_IEC958_SWITCH "Switch"
290#define SND_CTL_NAME_IEC958_VOLUME "Volume"
292#define SND_CTL_NAME_IEC958_DEFAULT "Default"
294#define SND_CTL_NAME_IEC958_MASK "Mask"
296#define SND_CTL_NAME_IEC958_CON_MASK "Con Mask"
298#define SND_CTL_NAME_IEC958_PRO_MASK "Pro Mask"
300#define SND_CTL_NAME_IEC958_PCM_STREAM "PCM Stream"
302#define SND_CTL_NAME_IEC958(expl,direction,what) "IEC958 " expl SND_CTL_NAME_##direction SND_CTL_NAME_IEC958_##what
303
305#define SND_CTL_POWER_MASK 0xff00
307#define SND_CTL_POWER_D0 0x0000
309#define SND_CTL_POWER_D1 0x0100
311#define SND_CTL_POWER_D2 0x0200
313#define SND_CTL_POWER_D3 0x0300
315#define SND_CTL_POWER_D3hot (SND_CTL_POWER_D3|0x0000)
317#define SND_CTL_POWER_D3cold (SND_CTL_POWER_D3|0x0001)
318
320#define SND_CTL_TLVT_CONTAINER 0x0000
322#define SND_CTL_TLVT_DB_SCALE 0x0001
324#define SND_CTL_TLVT_DB_LINEAR 0x0002
326#define SND_CTL_TLVT_DB_RANGE 0x0003
328#define SND_CTL_TLVT_DB_MINMAX 0x0004
330#define SND_CTL_TLVT_DB_MINMAX_MUTE 0x0005
331
333#define SND_CTL_TLV_DB_GAIN_MUTE -9999999
334
336#define SND_CTL_TLVT_CHMAP_FIXED 0x00101
338#define SND_CTL_TLVT_CHMAP_VAR 0x00102
340#define SND_CTL_TLVT_CHMAP_PAIRED 0x00103
341
343 typedef enum _snd_ctl_type {
345 SND_CTL_TYPE_HW,
347 SND_CTL_TYPE_SHM,
349 SND_CTL_TYPE_INET,
351 SND_CTL_TYPE_EXT,
353 SND_CTL_TYPE_REMAP,
354} snd_ctl_type_t;
355
357#define SND_CTL_NONBLOCK 0x0001
358
360#define SND_CTL_ASYNC 0x0002
361
363#define SND_CTL_READONLY 0x0004
364
366#define SND_CTL_EINTR 0x0080
367
369 typedef struct _snd_ctl snd_ctl_t;
370
372#define SND_SCTL_NOFREE 0x0001
373
375 typedef struct _snd_sctl snd_sctl_t;
376
377 int snd_card_load(int card);
378 int snd_card_next(int *card);
379 int snd_card_get_index(const char *name);
380 int snd_card_get_name(int card, char **name);
381 int snd_card_get_longname(int card, char **name);
382
383 int snd_ctl_open(snd_ctl_t **ctl, const char *name, int mode);
384 int snd_ctl_open_lconf(snd_ctl_t **ctl, const char *name, int mode, snd_config_t *lconf);
385 int snd_ctl_open_fallback(snd_ctl_t **ctl, snd_config_t *root, const char *name, const char *orig_name, int mode);
386 int snd_ctl_close(snd_ctl_t *ctl);
387 int snd_ctl_nonblock(snd_ctl_t *ctl, int nonblock);
388 static __inline__ int snd_ctl_abort(snd_ctl_t *ctl) { return snd_ctl_nonblock(ctl, 2); }
389 int snd_async_add_ctl_handler(snd_async_handler_t **handler, snd_ctl_t *ctl,
390 snd_async_callback_t callback, void *private_data);
391 snd_ctl_t *snd_async_handler_get_ctl(snd_async_handler_t *handler);
392 int snd_ctl_poll_descriptors_count(snd_ctl_t *ctl);
393 int snd_ctl_poll_descriptors(snd_ctl_t *ctl, struct pollfd *pfds, unsigned int space);
394 int snd_ctl_poll_descriptors_revents(snd_ctl_t *ctl, struct pollfd *pfds, unsigned int nfds, unsigned short *revents);
395 int snd_ctl_subscribe_events(snd_ctl_t *ctl, int subscribe);
396 int snd_ctl_card_info(snd_ctl_t *ctl, snd_ctl_card_info_t *info);
397 int snd_ctl_elem_list(snd_ctl_t *ctl, snd_ctl_elem_list_t *list);
398 int snd_ctl_elem_info(snd_ctl_t *ctl, snd_ctl_elem_info_t *info);
399 int snd_ctl_elem_read(snd_ctl_t *ctl, snd_ctl_elem_value_t *data);
400 int snd_ctl_elem_write(snd_ctl_t *ctl, snd_ctl_elem_value_t *data);
401 int snd_ctl_elem_lock(snd_ctl_t *ctl, snd_ctl_elem_id_t *id);
402 int snd_ctl_elem_unlock(snd_ctl_t *ctl, snd_ctl_elem_id_t *id);
403 int snd_ctl_elem_tlv_read(snd_ctl_t *ctl, const snd_ctl_elem_id_t *id,
404 unsigned int *tlv, unsigned int tlv_size);
405 int snd_ctl_elem_tlv_write(snd_ctl_t *ctl, const snd_ctl_elem_id_t *id,
406 const unsigned int *tlv);
407 int snd_ctl_elem_tlv_command(snd_ctl_t *ctl, const snd_ctl_elem_id_t *id,
408 const unsigned int *tlv);
409#ifdef __ALSA_HWDEP_H
410 int snd_ctl_hwdep_next_device(snd_ctl_t *ctl, int * device);
411 int snd_ctl_hwdep_info(snd_ctl_t *ctl, snd_hwdep_info_t * info);
412#endif
413#ifdef __ALSA_PCM_H
414 int snd_ctl_pcm_next_device(snd_ctl_t *ctl, int *device);
415 int snd_ctl_pcm_info(snd_ctl_t *ctl, snd_pcm_info_t * info);
416 int snd_ctl_pcm_prefer_subdevice(snd_ctl_t *ctl, int subdev);
417#endif
418#ifdef __ALSA_RAWMIDI_H
419 int snd_ctl_rawmidi_next_device(snd_ctl_t *ctl, int * device);
420 int snd_ctl_rawmidi_info(snd_ctl_t *ctl, snd_rawmidi_info_t * info);
421 int snd_ctl_rawmidi_prefer_subdevice(snd_ctl_t *ctl, int subdev);
422#endif
423#ifdef __ALSA_UMP_H
424 int snd_ctl_ump_next_device(snd_ctl_t *ctl, int *device);
425 int snd_ctl_ump_endpoint_info(snd_ctl_t *ctl, snd_ump_endpoint_info_t *info);
426 int snd_ctl_ump_block_info(snd_ctl_t *ctl, snd_ump_block_info_t *info);
427#endif
428 int snd_ctl_set_power_state(snd_ctl_t *ctl, unsigned int state);
429 int snd_ctl_get_power_state(snd_ctl_t *ctl, unsigned int *state);
430
431 int snd_ctl_read(snd_ctl_t *ctl, snd_ctl_event_t *event);
432 int snd_ctl_wait(snd_ctl_t *ctl, int timeout);
433 const char *snd_ctl_name(snd_ctl_t *ctl);
434 snd_ctl_type_t snd_ctl_type(snd_ctl_t *ctl);
435
436 const char *snd_ctl_elem_type_name(snd_ctl_elem_type_t type);
437 const char *snd_ctl_elem_iface_name(snd_ctl_elem_iface_t iface);
438 const char *snd_ctl_event_type_name(snd_ctl_event_type_t type);
439
440 unsigned int snd_ctl_event_elem_get_mask(const snd_ctl_event_t *obj);
441 unsigned int snd_ctl_event_elem_get_numid(const snd_ctl_event_t *obj);
442 void snd_ctl_event_elem_get_id(const snd_ctl_event_t *obj, snd_ctl_elem_id_t *ptr);
443 snd_ctl_elem_iface_t snd_ctl_event_elem_get_interface(const snd_ctl_event_t *obj);
444 unsigned int snd_ctl_event_elem_get_device(const snd_ctl_event_t *obj);
445 unsigned int snd_ctl_event_elem_get_subdevice(const snd_ctl_event_t *obj);
446 const char *snd_ctl_event_elem_get_name(const snd_ctl_event_t *obj);
447 unsigned int snd_ctl_event_elem_get_index(const snd_ctl_event_t *obj);
448
449 int snd_ctl_elem_list_alloc_space(snd_ctl_elem_list_t *obj, unsigned int entries);
450 void snd_ctl_elem_list_free_space(snd_ctl_elem_list_t *obj);
451
452 char *snd_ctl_ascii_elem_id_get(snd_ctl_elem_id_t *id);
453 int snd_ctl_ascii_elem_id_parse(snd_ctl_elem_id_t *dst, const char *str);
454 int snd_ctl_ascii_value_parse(snd_ctl_t *handle,
455 snd_ctl_elem_value_t *dst,
456 snd_ctl_elem_info_t *info,
457 const char *value);
458
459 size_t snd_ctl_elem_id_sizeof(void);
464#define snd_ctl_elem_id_alloca(ptr) __snd_alloca(ptr, snd_ctl_elem_id)
465 int snd_ctl_elem_id_malloc(snd_ctl_elem_id_t **ptr);
466 void snd_ctl_elem_id_free(snd_ctl_elem_id_t *obj);
467 void snd_ctl_elem_id_clear(snd_ctl_elem_id_t *obj);
468 void snd_ctl_elem_id_copy(snd_ctl_elem_id_t *dst, const snd_ctl_elem_id_t *src);
469 int snd_ctl_elem_id_compare_numid(const snd_ctl_elem_id_t *id1, const snd_ctl_elem_id_t *id2);
470 int snd_ctl_elem_id_compare_set(const snd_ctl_elem_id_t *id1, const snd_ctl_elem_id_t *id2);
471 unsigned int snd_ctl_elem_id_get_numid(const snd_ctl_elem_id_t *obj);
472 snd_ctl_elem_iface_t snd_ctl_elem_id_get_interface(const snd_ctl_elem_id_t *obj);
473 unsigned int snd_ctl_elem_id_get_device(const snd_ctl_elem_id_t *obj);
474 unsigned int snd_ctl_elem_id_get_subdevice(const snd_ctl_elem_id_t *obj);
475 const char *snd_ctl_elem_id_get_name(const snd_ctl_elem_id_t *obj);
476 unsigned int snd_ctl_elem_id_get_index(const snd_ctl_elem_id_t *obj);
477 void snd_ctl_elem_id_set_numid(snd_ctl_elem_id_t *obj, unsigned int val);
478 void snd_ctl_elem_id_set_interface(snd_ctl_elem_id_t *obj, snd_ctl_elem_iface_t val);
479 void snd_ctl_elem_id_set_device(snd_ctl_elem_id_t *obj, unsigned int val);
480 void snd_ctl_elem_id_set_subdevice(snd_ctl_elem_id_t *obj, unsigned int val);
481 void snd_ctl_elem_id_set_name(snd_ctl_elem_id_t *obj, const char *val);
482 void snd_ctl_elem_id_set_index(snd_ctl_elem_id_t *obj, unsigned int val);
483
484 size_t snd_ctl_card_info_sizeof(void);
485
497#define snd_ctl_card_info_alloca(ptr) __snd_alloca(ptr, snd_ctl_card_info)
498
499 int snd_ctl_card_info_malloc(snd_ctl_card_info_t **ptr);
500 void snd_ctl_card_info_free(snd_ctl_card_info_t *obj);
501 void snd_ctl_card_info_clear(snd_ctl_card_info_t *obj);
502 void snd_ctl_card_info_copy(snd_ctl_card_info_t *dst, const snd_ctl_card_info_t *src);
503 int snd_ctl_card_info_get_card(const snd_ctl_card_info_t *obj);
504 const char *snd_ctl_card_info_get_id(const snd_ctl_card_info_t *obj);
505 const char *snd_ctl_card_info_get_driver(const snd_ctl_card_info_t *obj);
506 const char *snd_ctl_card_info_get_name(const snd_ctl_card_info_t *obj);
507 const char *snd_ctl_card_info_get_longname(const snd_ctl_card_info_t *obj);
508 const char *snd_ctl_card_info_get_mixername(const snd_ctl_card_info_t *obj);
509 const char *snd_ctl_card_info_get_components(const snd_ctl_card_info_t *obj);
510
511 size_t snd_ctl_event_sizeof(void);
516#define snd_ctl_event_alloca(ptr) __snd_alloca(ptr, snd_ctl_event)
517 int snd_ctl_event_malloc(snd_ctl_event_t **ptr);
518 void snd_ctl_event_free(snd_ctl_event_t *obj);
519 void snd_ctl_event_clear(snd_ctl_event_t *obj);
520 void snd_ctl_event_copy(snd_ctl_event_t *dst, const snd_ctl_event_t *src);
521 snd_ctl_event_type_t snd_ctl_event_get_type(const snd_ctl_event_t *obj);
522
523 size_t snd_ctl_elem_list_sizeof(void);
524
534#define snd_ctl_elem_list_alloca(ptr) __snd_alloca(ptr, snd_ctl_elem_list)
535
536 int snd_ctl_elem_list_malloc(snd_ctl_elem_list_t **ptr);
537 void snd_ctl_elem_list_free(snd_ctl_elem_list_t *obj);
538 void snd_ctl_elem_list_clear(snd_ctl_elem_list_t *obj);
539 void snd_ctl_elem_list_copy(snd_ctl_elem_list_t *dst, const snd_ctl_elem_list_t *src);
540 void snd_ctl_elem_list_set_offset(snd_ctl_elem_list_t *obj, unsigned int val);
541 unsigned int snd_ctl_elem_list_get_used(const snd_ctl_elem_list_t *obj);
542 unsigned int snd_ctl_elem_list_get_count(const snd_ctl_elem_list_t *obj);
543 void snd_ctl_elem_list_get_id(const snd_ctl_elem_list_t *obj, unsigned int idx, snd_ctl_elem_id_t *ptr);
544 unsigned int snd_ctl_elem_list_get_numid(const snd_ctl_elem_list_t *obj, unsigned int idx);
545 snd_ctl_elem_iface_t snd_ctl_elem_list_get_interface(const snd_ctl_elem_list_t *obj, unsigned int idx);
546 unsigned int snd_ctl_elem_list_get_device(const snd_ctl_elem_list_t *obj, unsigned int idx);
547 unsigned int snd_ctl_elem_list_get_subdevice(const snd_ctl_elem_list_t *obj, unsigned int idx);
548 const char *snd_ctl_elem_list_get_name(const snd_ctl_elem_list_t *obj, unsigned int idx);
549 unsigned int snd_ctl_elem_list_get_index(const snd_ctl_elem_list_t *obj, unsigned int idx);
550
551 size_t snd_ctl_elem_info_sizeof(void);
556#define snd_ctl_elem_info_alloca(ptr) __snd_alloca(ptr, snd_ctl_elem_info)
557 int snd_ctl_elem_info_malloc(snd_ctl_elem_info_t **ptr);
558 void snd_ctl_elem_info_free(snd_ctl_elem_info_t *obj);
559 void snd_ctl_elem_info_clear(snd_ctl_elem_info_t *obj);
560 void snd_ctl_elem_info_copy(snd_ctl_elem_info_t *dst, const snd_ctl_elem_info_t *src);
561 snd_ctl_elem_type_t snd_ctl_elem_info_get_type(const snd_ctl_elem_info_t *obj);
562 int snd_ctl_elem_info_is_readable(const snd_ctl_elem_info_t *obj);
563 int snd_ctl_elem_info_is_writable(const snd_ctl_elem_info_t *obj);
564 int snd_ctl_elem_info_is_volatile(const snd_ctl_elem_info_t *obj);
565 int snd_ctl_elem_info_is_inactive(const snd_ctl_elem_info_t *obj);
566 int snd_ctl_elem_info_is_locked(const snd_ctl_elem_info_t *obj);
567 int snd_ctl_elem_info_is_tlv_readable(const snd_ctl_elem_info_t *obj);
568 int snd_ctl_elem_info_is_tlv_writable(const snd_ctl_elem_info_t *obj);
569 int snd_ctl_elem_info_is_tlv_commandable(const snd_ctl_elem_info_t *obj);
570 int snd_ctl_elem_info_is_owner(const snd_ctl_elem_info_t *obj);
571 int snd_ctl_elem_info_is_user(const snd_ctl_elem_info_t *obj);
572pid_t snd_ctl_elem_info_get_owner(const snd_ctl_elem_info_t *obj);
573 unsigned int snd_ctl_elem_info_get_count(const snd_ctl_elem_info_t *obj);
574 long snd_ctl_elem_info_get_min(const snd_ctl_elem_info_t *obj);
575 long snd_ctl_elem_info_get_max(const snd_ctl_elem_info_t *obj);
576 long snd_ctl_elem_info_get_step(const snd_ctl_elem_info_t *obj);
577 long long snd_ctl_elem_info_get_min64(const snd_ctl_elem_info_t *obj);
578 long long snd_ctl_elem_info_get_max64(const snd_ctl_elem_info_t *obj);
579 long long snd_ctl_elem_info_get_step64(const snd_ctl_elem_info_t *obj);
580 unsigned int snd_ctl_elem_info_get_items(const snd_ctl_elem_info_t *obj);
581 void snd_ctl_elem_info_set_item(snd_ctl_elem_info_t *obj, unsigned int val);
582 const char *snd_ctl_elem_info_get_item_name(const snd_ctl_elem_info_t *obj);
583 int snd_ctl_elem_info_get_dimensions(const snd_ctl_elem_info_t *obj);
584 int snd_ctl_elem_info_get_dimension(const snd_ctl_elem_info_t *obj, unsigned int idx);
585 int snd_ctl_elem_info_set_dimension(snd_ctl_elem_info_t *info,
586 const int dimension[4]);
587 void snd_ctl_elem_info_get_id(const snd_ctl_elem_info_t *obj, snd_ctl_elem_id_t *ptr);
588 unsigned int snd_ctl_elem_info_get_numid(const snd_ctl_elem_info_t *obj);
589 snd_ctl_elem_iface_t snd_ctl_elem_info_get_interface(const snd_ctl_elem_info_t *obj);
590 unsigned int snd_ctl_elem_info_get_device(const snd_ctl_elem_info_t *obj);
591 unsigned int snd_ctl_elem_info_get_subdevice(const snd_ctl_elem_info_t *obj);
592 const char *snd_ctl_elem_info_get_name(const snd_ctl_elem_info_t *obj);
593 unsigned int snd_ctl_elem_info_get_index(const snd_ctl_elem_info_t *obj);
594 void snd_ctl_elem_info_set_id(snd_ctl_elem_info_t *obj, const snd_ctl_elem_id_t *ptr);
595 void snd_ctl_elem_info_set_numid(snd_ctl_elem_info_t *obj, unsigned int val);
596 void snd_ctl_elem_info_set_interface(snd_ctl_elem_info_t *obj, snd_ctl_elem_iface_t val);
597 void snd_ctl_elem_info_set_device(snd_ctl_elem_info_t *obj, unsigned int val);
598 void snd_ctl_elem_info_set_subdevice(snd_ctl_elem_info_t *obj, unsigned int val);
599 void snd_ctl_elem_info_set_name(snd_ctl_elem_info_t *obj, const char *val);
600 void snd_ctl_elem_info_set_index(snd_ctl_elem_info_t *obj, unsigned int val);
601 void snd_ctl_elem_info_set_read_write(snd_ctl_elem_info_t *obj, int rval, int wval);
602 void snd_ctl_elem_info_set_tlv_read_write(snd_ctl_elem_info_t *obj, int rval, int wval);
603 void snd_ctl_elem_info_set_inactive(snd_ctl_elem_info_t *obj, int val);
604
605 int snd_ctl_add_integer_elem_set(snd_ctl_t *ctl, snd_ctl_elem_info_t *info,
606 unsigned int element_count,
607 unsigned int member_count,
608 long min, long max, long step);
609 int snd_ctl_add_integer64_elem_set(snd_ctl_t *ctl, snd_ctl_elem_info_t *info,
610 unsigned int element_count,
611 unsigned int member_count,
612 long long min, long long max,
613 long long step);
614 int snd_ctl_add_boolean_elem_set(snd_ctl_t *ctl, snd_ctl_elem_info_t *info,
615 unsigned int element_count,
616 unsigned int member_count);
617 int snd_ctl_add_enumerated_elem_set(snd_ctl_t *ctl, snd_ctl_elem_info_t *info,
618 unsigned int element_count,
619 unsigned int member_count,
620 unsigned int items,
621 const char *const labels[]);
622 int snd_ctl_add_bytes_elem_set(snd_ctl_t *ctl, snd_ctl_elem_info_t *info,
623 unsigned int element_count,
624 unsigned int member_count);
625
626 int snd_ctl_elem_add_integer(snd_ctl_t *ctl, const snd_ctl_elem_id_t *id, unsigned int count, long imin, long imax, long istep);
627 int snd_ctl_elem_add_integer64(snd_ctl_t *ctl, const snd_ctl_elem_id_t *id, unsigned int count, long long imin, long long imax, long long istep);
628 int snd_ctl_elem_add_boolean(snd_ctl_t *ctl, const snd_ctl_elem_id_t *id, unsigned int count);
629 int snd_ctl_elem_add_enumerated(snd_ctl_t *ctl, const snd_ctl_elem_id_t *id, unsigned int count, unsigned int items, const char *const names[]);
630 int snd_ctl_elem_add_iec958(snd_ctl_t *ctl, const snd_ctl_elem_id_t *id);
631 int snd_ctl_elem_remove(snd_ctl_t *ctl, snd_ctl_elem_id_t *id);
632
633 size_t snd_ctl_elem_value_sizeof(void);
634
646#define snd_ctl_elem_value_alloca(ptr) __snd_alloca(ptr, snd_ctl_elem_value)
647
648 int snd_ctl_elem_value_malloc(snd_ctl_elem_value_t **ptr);
649 void snd_ctl_elem_value_free(snd_ctl_elem_value_t *obj);
650 void snd_ctl_elem_value_clear(snd_ctl_elem_value_t *obj);
651 void snd_ctl_elem_value_copy(snd_ctl_elem_value_t *dst, const snd_ctl_elem_value_t *src);
652 int snd_ctl_elem_value_compare(snd_ctl_elem_value_t *left, const snd_ctl_elem_value_t *right);
653 void snd_ctl_elem_value_get_id(const snd_ctl_elem_value_t *obj, snd_ctl_elem_id_t *ptr);
654 unsigned int snd_ctl_elem_value_get_numid(const snd_ctl_elem_value_t *obj);
655 snd_ctl_elem_iface_t snd_ctl_elem_value_get_interface(const snd_ctl_elem_value_t *obj);
656 unsigned int snd_ctl_elem_value_get_device(const snd_ctl_elem_value_t *obj);
657 unsigned int snd_ctl_elem_value_get_subdevice(const snd_ctl_elem_value_t *obj);
658 const char *snd_ctl_elem_value_get_name(const snd_ctl_elem_value_t *obj);
659 unsigned int snd_ctl_elem_value_get_index(const snd_ctl_elem_value_t *obj);
660 void snd_ctl_elem_value_set_id(snd_ctl_elem_value_t *obj, const snd_ctl_elem_id_t *ptr);
661 void snd_ctl_elem_value_set_numid(snd_ctl_elem_value_t *obj, unsigned int val);
662 void snd_ctl_elem_value_set_interface(snd_ctl_elem_value_t *obj, snd_ctl_elem_iface_t val);
663 void snd_ctl_elem_value_set_device(snd_ctl_elem_value_t *obj, unsigned int val);
664 void snd_ctl_elem_value_set_subdevice(snd_ctl_elem_value_t *obj, unsigned int val);
665 void snd_ctl_elem_value_set_name(snd_ctl_elem_value_t *obj, const char *val);
666 void snd_ctl_elem_value_set_index(snd_ctl_elem_value_t *obj, unsigned int val);
667 int snd_ctl_elem_value_get_boolean(const snd_ctl_elem_value_t *obj, unsigned int idx);
668 long snd_ctl_elem_value_get_integer(const snd_ctl_elem_value_t *obj, unsigned int idx);
669 long long snd_ctl_elem_value_get_integer64(const snd_ctl_elem_value_t *obj, unsigned int idx);
670 unsigned int snd_ctl_elem_value_get_enumerated(const snd_ctl_elem_value_t *obj, unsigned int idx);
671 unsigned char snd_ctl_elem_value_get_byte(const snd_ctl_elem_value_t *obj, unsigned int idx);
672 void snd_ctl_elem_value_set_boolean(snd_ctl_elem_value_t *obj, unsigned int idx, long val);
673 void snd_ctl_elem_value_set_integer(snd_ctl_elem_value_t *obj, unsigned int idx, long val);
674 void snd_ctl_elem_value_set_integer64(snd_ctl_elem_value_t *obj, unsigned int idx, long long val);
675 void snd_ctl_elem_value_set_enumerated(snd_ctl_elem_value_t *obj, unsigned int idx, unsigned int val);
676 void snd_ctl_elem_value_set_byte(snd_ctl_elem_value_t *obj, unsigned int idx, unsigned char val);
677 void snd_ctl_elem_set_bytes(snd_ctl_elem_value_t *obj, void *data, size_t size);
678 const void * snd_ctl_elem_value_get_bytes(const snd_ctl_elem_value_t *obj);
679 void snd_ctl_elem_value_get_iec958(const snd_ctl_elem_value_t *obj, snd_aes_iec958_t *ptr);
680 void snd_ctl_elem_value_set_iec958(snd_ctl_elem_value_t *obj, const snd_aes_iec958_t *ptr);
681
682 int snd_tlv_parse_dB_info(unsigned int *tlv, unsigned int tlv_size,
683 unsigned int **db_tlvp);
684 int snd_tlv_get_dB_range(unsigned int *tlv, long rangemin, long rangemax,
685 long *min, long *max);
686 int snd_tlv_convert_to_dB(unsigned int *tlv, long rangemin, long rangemax,
687 long volume, long *db_gain);
688 int snd_tlv_convert_from_dB(unsigned int *tlv, long rangemin, long rangemax,
689 long db_gain, long *value, int xdir);
690 int snd_ctl_get_dB_range(snd_ctl_t *ctl, const snd_ctl_elem_id_t *id,
691 long *min, long *max);
692 int snd_ctl_convert_to_dB(snd_ctl_t *ctl, const snd_ctl_elem_id_t *id,
693 long volume, long *db_gain);
694 int snd_ctl_convert_from_dB(snd_ctl_t *ctl, const snd_ctl_elem_id_t *id,
695 long db_gain, long *value, int xdir);
696
706 typedef struct _snd_hctl_elem snd_hctl_elem_t;
707
709 typedef struct _snd_hctl snd_hctl_t;
710
717 typedef int (*snd_hctl_compare_t)(const snd_hctl_elem_t *e1,
718 const snd_hctl_elem_t *e2);
719 int snd_hctl_compare_fast(const snd_hctl_elem_t *c1,
720 const snd_hctl_elem_t *c2);
728 typedef int (*snd_hctl_callback_t)(snd_hctl_t *hctl,
729 unsigned int mask,
730 snd_hctl_elem_t *elem);
737 typedef int (*snd_hctl_elem_callback_t)(snd_hctl_elem_t *elem,
738 unsigned int mask);
739
740 int snd_hctl_open(snd_hctl_t **hctl, const char *name, int mode);
741 int snd_hctl_open_ctl(snd_hctl_t **hctlp, snd_ctl_t *ctl);
742 int snd_hctl_close(snd_hctl_t *hctl);
743 int snd_hctl_nonblock(snd_hctl_t *hctl, int nonblock);
744 static __inline__ int snd_hctl_abort(snd_hctl_t *hctl) { return snd_hctl_nonblock(hctl, 2); }
745 int snd_hctl_poll_descriptors_count(snd_hctl_t *hctl);
746 int snd_hctl_poll_descriptors(snd_hctl_t *hctl, struct pollfd *pfds, unsigned int space);
747 int snd_hctl_poll_descriptors_revents(snd_hctl_t *ctl, struct pollfd *pfds, unsigned int nfds, unsigned short *revents);
748 unsigned int snd_hctl_get_count(snd_hctl_t *hctl);
749 int snd_hctl_set_compare(snd_hctl_t *hctl, snd_hctl_compare_t hsort);
750 snd_hctl_elem_t *snd_hctl_first_elem(snd_hctl_t *hctl);
751 snd_hctl_elem_t *snd_hctl_last_elem(snd_hctl_t *hctl);
752 snd_hctl_elem_t *snd_hctl_find_elem(snd_hctl_t *hctl, const snd_ctl_elem_id_t *id);
753 void snd_hctl_set_callback(snd_hctl_t *hctl, snd_hctl_callback_t callback);
754 void snd_hctl_set_callback_private(snd_hctl_t *hctl, void *data);
755 void *snd_hctl_get_callback_private(snd_hctl_t *hctl);
756 int snd_hctl_load(snd_hctl_t *hctl);
757 int snd_hctl_free(snd_hctl_t *hctl);
758 int snd_hctl_handle_events(snd_hctl_t *hctl);
759 const char *snd_hctl_name(snd_hctl_t *hctl);
760 int snd_hctl_wait(snd_hctl_t *hctl, int timeout);
761 snd_ctl_t *snd_hctl_ctl(snd_hctl_t *hctl);
762
763 snd_hctl_elem_t *snd_hctl_elem_next(snd_hctl_elem_t *elem);
764 snd_hctl_elem_t *snd_hctl_elem_prev(snd_hctl_elem_t *elem);
765 int snd_hctl_elem_info(snd_hctl_elem_t *elem, snd_ctl_elem_info_t * info);
766 int snd_hctl_elem_read(snd_hctl_elem_t *elem, snd_ctl_elem_value_t * value);
767 int snd_hctl_elem_write(snd_hctl_elem_t *elem, snd_ctl_elem_value_t * value);
768 int snd_hctl_elem_tlv_read(snd_hctl_elem_t *elem, unsigned int *tlv, unsigned int tlv_size);
769 int snd_hctl_elem_tlv_write(snd_hctl_elem_t *elem, const unsigned int *tlv);
770 int snd_hctl_elem_tlv_command(snd_hctl_elem_t *elem, const unsigned int *tlv);
771
772 snd_hctl_t *snd_hctl_elem_get_hctl(snd_hctl_elem_t *elem);
773
774 void snd_hctl_elem_get_id(const snd_hctl_elem_t *obj, snd_ctl_elem_id_t *ptr);
775 unsigned int snd_hctl_elem_get_numid(const snd_hctl_elem_t *obj);
776 snd_ctl_elem_iface_t snd_hctl_elem_get_interface(const snd_hctl_elem_t *obj);
777 unsigned int snd_hctl_elem_get_device(const snd_hctl_elem_t *obj);
778 unsigned int snd_hctl_elem_get_subdevice(const snd_hctl_elem_t *obj);
779 const char *snd_hctl_elem_get_name(const snd_hctl_elem_t *obj);
780 unsigned int snd_hctl_elem_get_index(const snd_hctl_elem_t *obj);
781 void snd_hctl_elem_set_callback(snd_hctl_elem_t *obj, snd_hctl_elem_callback_t val);
782 void * snd_hctl_elem_get_callback_private(const snd_hctl_elem_t *obj);
783 void snd_hctl_elem_set_callback_private(snd_hctl_elem_t *obj, void * val);
784
796 int snd_sctl_build(snd_sctl_t **ctl, snd_ctl_t *handle, snd_config_t *config,
797 snd_config_t *private_data, int mode);
798 int snd_sctl_free(snd_sctl_t *handle);
799 int snd_sctl_install(snd_sctl_t *handle);
800 int snd_sctl_remove(snd_sctl_t *handle);
801
812 int snd_device_name_hint(int card, const char *iface, void ***hints);
813 int snd_device_name_free_hint(void **hints);
814 char *snd_device_name_get_hint(const void *hint, const char *id);
815
818#ifdef __cplusplus
819}
820#endif
821
822#endif /* __ALSA_CONTROL_H */
snd_ctl_pcm_prefer_subdevice
int snd_ctl_pcm_prefer_subdevice(snd_ctl_t *ctl, int subdev)
Set preferred PCM subdevice number of successive PCM open.
Definition control.c:1231
snd_ctl_ump_next_device
int snd_ctl_ump_next_device(snd_ctl_t *ctl, int *device)
Get next UMP device number.
Definition control.c:1279
snd_ctl_rawmidi_next_device
int snd_ctl_rawmidi_next_device(snd_ctl_t *ctl, int *device)
Get next RawMidi device number.
Definition control.c:1243
snd_ctl_hwdep_info
int snd_ctl_hwdep_info(snd_ctl_t *ctl, snd_hwdep_info_t *info)
Get info about a hardware dependent device.
Definition control.c:1195
snd_ctl_rawmidi_info
int snd_ctl_rawmidi_info(snd_ctl_t *ctl, snd_rawmidi_info_t *info)
Get info about a RawMidi device.
Definition control.c:1255
snd_ctl_ump_endpoint_info
int snd_ctl_ump_endpoint_info(snd_ctl_t *ctl, snd_ump_endpoint_info_t *info)
Get UMP Endpoint info about a UMP RawMidi device.
Definition control.c:1293
snd_ctl_ump_block_info
int snd_ctl_ump_block_info(snd_ctl_t *ctl, snd_ump_block_info_t *info)
Get UMP Block info about a UMP RawMidi device.
Definition control.c:1308
snd_ctl_hwdep_next_device
int snd_ctl_hwdep_next_device(snd_ctl_t *ctl, int *device)
Get next hardware dependent device number.
Definition control.c:1183
snd_ctl_pcm_info
int snd_ctl_pcm_info(snd_ctl_t *ctl, snd_pcm_info_t *info)
Get info about a PCM device.
Definition control.c:1219
snd_ctl_pcm_next_device
int snd_ctl_pcm_next_device(snd_ctl_t *ctl, int *device)
Get next PCM device number.
Definition control.c:1207
snd_ctl_rawmidi_prefer_subdevice
int snd_ctl_rawmidi_prefer_subdevice(snd_ctl_t *ctl, int subdev)
Set preferred RawMidi subdevice number of successive RawMidi open.
Definition control.c:1267
snd_config_t
struct _snd_config snd_config_t
Internal structure for a configuration node object.
Definition conf.h:74
snd_ctl_open_fallback
int snd_ctl_open_fallback(snd_ctl_t **ctl, snd_config_t *root, const char *name, const char *orig_name, int mode)
Opens a fallback CTL.
Definition control.c:1657
snd_ctl_elem_value_sizeof
size_t snd_ctl_elem_value_sizeof(void)
Get size of data structure for an element.
Definition control.c:3169
snd_ctl_elem_value_set_interface
void snd_ctl_elem_value_set_interface(snd_ctl_elem_value_t *obj, snd_ctl_elem_iface_t val)
Set the identifiers 'interface' part within the given element value.
Definition control.c:3380
snd_ctl_ascii_value_parse
int snd_ctl_ascii_value_parse(snd_ctl_t *handle, snd_ctl_elem_value_t *dst, snd_ctl_elem_info_t *info, const char *value)
parse ASCII string as CTL element value
Definition ctlparse.c:346
snd_ctl_t
struct _snd_ctl snd_ctl_t
Definition control.h:369
snd_ctl_elem_info_sizeof
size_t snd_ctl_elem_info_sizeof(void)
get size of snd_ctl_elem_info_t
Definition control.c:2567
snd_ctl_nonblock
int snd_ctl_nonblock(snd_ctl_t *ctl, int nonblock)
set nonblock mode
Definition control.c:256
snd_ctl_elem_value_set_byte
void snd_ctl_elem_value_set_byte(snd_ctl_elem_value_t *obj, unsigned int idx, unsigned char val)
Set an element members value.
Definition control.c:3615
snd_ctl_elem_list_get_count
unsigned int snd_ctl_elem_list_get_count(const snd_ctl_elem_list_t *obj)
Get total count of elements present in CTL device.
Definition control.c:2466
snd_ctl_elem_list_clear
void snd_ctl_elem_list_clear(snd_ctl_elem_list_t *obj)
Clear given snd_ctl_elem_list_t object.
Definition control.c:2406
snd_ctl_elem_id_free
void snd_ctl_elem_id_free(snd_ctl_elem_id_t *obj)
frees a previously allocated snd_ctl_elem_id_t
Definition control.c:1903
snd_tlv_convert_from_dB
int snd_tlv_convert_from_dB(unsigned int *tlv, long rangemin, long rangemax, long db_gain, long *value, int xdir)
Convert from dB gain to the corresponding raw value.
Definition tlv.c:303
snd_ctl_elem_info_get_type
snd_ctl_elem_type_t snd_ctl_elem_info_get_type(const snd_ctl_elem_info_t *obj)
Get type from a CTL element id/info.
Definition control.c:2620
snd_ctl_set_power_state
int snd_ctl_set_power_state(snd_ctl_t *ctl, unsigned int state)
Set Power State to given SND_CTL_POWER_* value and do the power management.
Definition control.c:1322
snd_ctl_elem_info_set_numid
void snd_ctl_elem_info_set_numid(snd_ctl_elem_info_t *obj, unsigned int val)
Set element numeric identifier of a CTL element id/info.
Definition control.c:3064
snd_ctl_card_info_get_card
int snd_ctl_card_info_get_card(const snd_ctl_card_info_t *obj)
Get the sound card index from the given info object.
Definition control.c:2198
snd_ctl_elem_iface_t
snd_ctl_elem_iface_t
Definition control.h:241
snd_ctl_elem_info_get_dimensions
int snd_ctl_elem_info_get_dimensions(const snd_ctl_elem_info_t *obj)
Get count of dimensions for given element.
Definition control.c:2888
snd_card_get_index
int snd_card_get_index(const char *name)
Convert a card string to the card index.
Definition cards.c:140
snd_ctl_event_elem_get_mask
unsigned int snd_ctl_event_elem_get_mask(const snd_ctl_event_t *obj)
Get event mask for an element related event.
Definition control.c:1777
snd_ctl_elem_list_get_index
unsigned int snd_ctl_elem_list_get_index(const snd_ctl_elem_list_t *obj, unsigned int idx)
Get index part of CTL element identifier for an entry of a CTL element identifiers list.
Definition control.c:2556
snd_ctl_ascii_elem_id_get
char * snd_ctl_ascii_elem_id_get(snd_ctl_elem_id_t *id)
return ASCII CTL element identifier name
Definition ctlparse.c:117
snd_ctl_elem_info_is_locked
int snd_ctl_elem_info_is_locked(const snd_ctl_elem_info_t *obj)
Get info whether an element is locked.
Definition control.c:2675
snd_ctl_elem_lock
int snd_ctl_elem_lock(snd_ctl_t *ctl, snd_ctl_elem_id_t *id)
Lock CTL element.
Definition control.c:1159
snd_ctl_elem_id_set_numid
void snd_ctl_elem_id_set_numid(snd_ctl_elem_id_t *obj, unsigned int val)
Set numeric identifier for a CTL element identifier.
Definition control.c:2064
snd_ctl_elem_info_get_dimension
int snd_ctl_elem_info_get_dimension(const snd_ctl_elem_info_t *obj, unsigned int idx)
Get specified of dimension width for given element.
Definition control.c:2917
snd_async_add_ctl_handler
int snd_async_add_ctl_handler(snd_async_handler_t **handler, snd_ctl_t *ctl, snd_async_callback_t callback, void *private_data)
Add an async handler for a CTL.
Definition control.c:1405
snd_ctl_elem_list_get_used
unsigned int snd_ctl_elem_list_get_used(const snd_ctl_elem_list_t *obj)
Get number of used entries in CTL element identifiers list.
Definition control.c:2448
snd_ctl_elem_value_t
struct _snd_ctl_elem_value snd_ctl_elem_value_t
Definition control.h:216
snd_ctl_elem_add_enumerated
int snd_ctl_elem_add_enumerated(snd_ctl_t *ctl, const snd_ctl_elem_id_t *id, unsigned int count, unsigned int items, const char *const names[])
Create and add a user-defined control element of enumerated type.
Definition control.c:930
snd_ctl_event_get_type
snd_ctl_event_type_t snd_ctl_event_get_type(const snd_ctl_event_t *obj)
Get type of a CTL event.
Definition control.c:2345
snd_ctl_add_integer64_elem_set
int snd_ctl_add_integer64_elem_set(snd_ctl_t *ctl, snd_ctl_elem_info_t *info, unsigned int element_count, unsigned int member_count, long long min, long long max, long long step)
Create and add some user-defined control elements of integer64 type.
Definition control.c:633
snd_ctl_event_malloc
int snd_ctl_event_malloc(snd_ctl_event_t **ptr)
allocate an invalid snd_ctl_event_t using standard malloc
Definition control.c:2302
snd_ctl_elem_set_bytes
void snd_ctl_elem_set_bytes(snd_ctl_elem_value_t *obj, void *data, size_t size)
Replace the data stored within the element.
Definition control.c:3635
snd_ctl_elem_id_set_device
void snd_ctl_elem_id_set_device(snd_ctl_elem_id_t *obj, unsigned int val)
Set device part for a CTL element identifier.
Definition control.c:2086
snd_ctl_elem_info_t
struct _snd_ctl_elem_info snd_ctl_elem_info_t
Definition control.h:162
snd_ctl_ascii_elem_id_parse
int snd_ctl_ascii_elem_id_parse(snd_ctl_elem_id_t *dst, const char *str)
parse ASCII string as CTL element identifier
Definition ctlparse.c:272
snd_ctl_elem_value_set_device
void snd_ctl_elem_value_set_device(snd_ctl_elem_value_t *obj, unsigned int val)
Set the identifiers 'device' part within the given element value.
Definition control.c:3394
snd_ctl_elem_info_is_writable
int snd_ctl_elem_info_is_writable(const snd_ctl_elem_info_t *obj)
Get info about writability from a CTL element id/info.
Definition control.c:2642
snd_ctl_elem_id_set_interface
void snd_ctl_elem_id_set_interface(snd_ctl_elem_id_t *obj, snd_ctl_elem_iface_t val)
Set interface part for a CTL element identifier.
Definition control.c:2075
snd_ctl_elem_value_malloc
int snd_ctl_elem_value_malloc(snd_ctl_elem_value_t **ptr)
Allocate an invalid snd_ctl_elem_value_t on the heap.
Definition control.c:3186
snd_ctl_convert_from_dB
int snd_ctl_convert_from_dB(snd_ctl_t *ctl, const snd_ctl_elem_id_t *id, long db_gain, long *value, int xdir)
Convert from dB gain to the raw volume value on the given control element.
Definition tlv.c:509
snd_ctl_elem_info_get_device
unsigned int snd_ctl_elem_info_get_device(const snd_ctl_elem_info_t *obj)
Get device part of CTL element identifier of a CTL element id/info.
Definition control.c:3009
snd_ctl_elem_tlv_command
int snd_ctl_elem_tlv_command(snd_ctl_t *ctl, const snd_ctl_elem_id_t *id, const unsigned int *tlv)
Process structured data from given buffer for an element set.
Definition control.c:1145
snd_ctl_elem_info_is_user
int snd_ctl_elem_info_is_user(const snd_ctl_elem_info_t *obj)
Get info if it's a user element.
Definition control.c:2697
snd_ctl_elem_info_get_step64
long long snd_ctl_elem_info_get_step64(const snd_ctl_elem_info_t *obj)
Get value step from a SND_CTL_ELEM_TYPE_INTEGER64 CTL element id/info.
Definition control.c:2835
snd_ctl_elem_iface_name
const char * snd_ctl_elem_iface_name(snd_ctl_elem_iface_t iface)
get name of a CTL element related interface
Definition control.c:1717
snd_ctl_elem_info_is_inactive
int snd_ctl_elem_info_is_inactive(const snd_ctl_elem_info_t *obj)
Get info about status from a CTL element id/info.
Definition control.c:2664
snd_ctl_elem_info_get_name
const char * snd_ctl_elem_info_get_name(const snd_ctl_elem_info_t *obj)
Get name part of CTL element identifier of a CTL element id/info.
Definition control.c:3031
snd_ctl_read
int snd_ctl_read(snd_ctl_t *ctl, snd_ctl_event_t *event)
Read an event.
Definition control.c:1350
snd_ctl_card_info_clear
void snd_ctl_card_info_clear(snd_ctl_card_info_t *obj)
Clear given card info object.
Definition control.c:2173
snd_ctl_elem_value_set_index
void snd_ctl_elem_value_set_index(snd_ctl_elem_value_t *obj, unsigned int val)
Set the identifiers 'index' part within the given element value.
Definition control.c:3436
snd_ctl_elem_info_set_item
void snd_ctl_elem_info_set_item(snd_ctl_elem_info_t *obj, unsigned int val)
Select item in a SND_CTL_ELEM_TYPE_ENUMERATED CTL element id/info.
Definition control.c:2859
snd_ctl_card_info_get_components
const char * snd_ctl_card_info_get_components(const snd_ctl_card_info_t *obj)
Get the sound cards "components" property from the given info object.
Definition control.c:2282
snd_ctl_elem_value_get_integer64
long long snd_ctl_elem_value_get_integer64(const snd_ctl_elem_value_t *obj, unsigned int idx)
Get an element members value.
Definition control.c:3489
snd_ctl_elem_info_set_name
void snd_ctl_elem_info_set_name(snd_ctl_elem_info_t *obj, const char *val)
Set name part of CTL element identifier of a CTL element id/info.
Definition control.c:3108
snd_ctl_elem_id_copy
void snd_ctl_elem_id_copy(snd_ctl_elem_id_t *dst, const snd_ctl_elem_id_t *src)
copy one snd_ctl_elem_id_t to another
Definition control.c:1922
snd_ctl_elem_value_get_numid
unsigned int snd_ctl_elem_value_get_numid(const snd_ctl_elem_value_t *obj)
Get the identifiers 'numid' part from the given element value.
Definition control.c:3267
snd_ctl_card_info_get_id
const char * snd_ctl_card_info_get_id(const snd_ctl_card_info_t *obj)
Get the sound card ID from the given info object.
Definition control.c:2212
snd_ctl_elem_info_get_index
unsigned int snd_ctl_elem_info_get_index(const snd_ctl_elem_info_t *obj)
Get index part of CTL element identifier of a CTL element id/info.
Definition control.c:3042
snd_ctl_elem_info_set_interface
void snd_ctl_elem_info_set_interface(snd_ctl_elem_info_t *obj, snd_ctl_elem_iface_t val)
Set interface part of CTL element identifier of a CTL element id/info.
Definition control.c:3075
snd_ctl_open_lconf
int snd_ctl_open_lconf(snd_ctl_t **ctl, const char *name, int mode, snd_config_t *lconf)
Opens a CTL using local configuration.
Definition control.c:1641
snd_ctl_event_elem_get_name
const char * snd_ctl_event_elem_get_name(const snd_ctl_event_t *obj)
Get name part of CTL element identifier for an element related event.
Definition control.c:1849
snd_ctl_card_info_get_name
const char * snd_ctl_card_info_get_name(const snd_ctl_card_info_t *obj)
Get the sound card name from the given info object.
Definition control.c:2240
snd_ctl_elem_info_clear
void snd_ctl_elem_info_clear(snd_ctl_elem_info_t *obj)
clear given snd_ctl_elem_info_t object
Definition control.c:2599
snd_ctl_elem_info_get_id
void snd_ctl_elem_info_get_id(const snd_ctl_elem_info_t *obj, snd_ctl_elem_id_t *ptr)
Get CTL element identifier of a CTL element id/info.
Definition control.c:2976
snd_tlv_parse_dB_info
int snd_tlv_parse_dB_info(unsigned int *tlv, unsigned int tlv_size, unsigned int **db_tlvp)
Parse TLV stream and retrieve dB information.
Definition tlv.c:61
snd_ctl_elem_list_alloc_space
int snd_ctl_elem_list_alloc_space(snd_ctl_elem_list_t *obj, unsigned int entries)
allocate space for CTL element identifiers list
Definition control.c:1745
snd_ctl_card_info_malloc
int snd_ctl_card_info_malloc(snd_ctl_card_info_t **ptr)
Allocate an invalid snd_ctl_card_info_t on the heap.
Definition control.c:2146
snd_ctl_elem_info_malloc
int snd_ctl_elem_info_malloc(snd_ctl_elem_info_t **ptr)
allocate an invalid snd_ctl_elem_info_t using standard malloc
Definition control.c:2577
snd_ctl_elem_id_get_numid
unsigned int snd_ctl_elem_id_get_numid(const snd_ctl_elem_id_t *obj)
Get numeric identifier from a CTL element identifier.
Definition control.c:1998
snd_card_get_longname
int snd_card_get_longname(int card, char **name)
Obtain the card long name.
Definition cards.c:222
snd_ctl_elem_id_get_device
unsigned int snd_ctl_elem_id_get_device(const snd_ctl_elem_id_t *obj)
Get device part of a CTL element identifier.
Definition control.c:2020
snd_ctl_elem_add_iec958
int snd_ctl_elem_add_iec958(snd_ctl_t *ctl, const snd_ctl_elem_id_t *id)
Create and add a user-defined control element of IEC958 type.
Definition control.c:973
snd_ctl_elem_info_set_read_write
void snd_ctl_elem_info_set_read_write(snd_ctl_elem_info_t *obj, int rval, int wval)
Set readability/writeability parameter of a CTL element id/info.
Definition control.c:3131
snd_ctl_elem_value_copy
void snd_ctl_elem_value_copy(snd_ctl_elem_value_t *dst, const snd_ctl_elem_value_t *src)
Bitwise copy of a snd_ctl_elem_value_t value.
Definition control.c:3223
snd_ctl_event_sizeof
size_t snd_ctl_event_sizeof(void)
get size of snd_ctl_event_t
Definition control.c:2292
snd_ctl_elem_tlv_read
int snd_ctl_elem_tlv_read(snd_ctl_t *ctl, const snd_ctl_elem_id_t *id, unsigned int *tlv, unsigned int tlv_size)
Read structured data from an element set to given buffer.
Definition control.c:1083
snd_ctl_open
int snd_ctl_open(snd_ctl_t **ctl, const char *name, int mode)
Opens a sound card.
Definition control.c:1613
snd_ctl_elem_value_get_byte
unsigned char snd_ctl_elem_value_get_byte(const snd_ctl_elem_value_t *obj, unsigned int idx)
Get an element members value.
Definition control.c:3525
snd_ctl_elem_value_get_name
const char * snd_ctl_elem_value_get_name(const snd_ctl_elem_value_t *obj)
Get the identifiers 'name' part from the given element value.
Definition control.c:3323
snd_ctl_elem_list_get_name
const char * snd_ctl_elem_list_get_name(const snd_ctl_elem_list_t *obj, unsigned int idx)
Get name part of CTL element identifier for an entry of a CTL element identifiers list.
Definition control.c:2543
snd_ctl_card_info_sizeof
size_t snd_ctl_card_info_sizeof(void)
get size of snd_ctl_card_info_t.
Definition control.c:2129
snd_ctl_elem_value_clear
void snd_ctl_elem_value_clear(snd_ctl_elem_value_t *obj)
Clear given data of an element.
Definition control.c:3213
snd_ctl_elem_info_get_min64
long long snd_ctl_elem_info_get_min64(const snd_ctl_elem_info_t *obj)
Get minimum value from a SND_CTL_ELEM_TYPE_INTEGER64 CTL element id/info.
Definition control.c:2811
snd_ctl_elem_id_get_subdevice
unsigned int snd_ctl_elem_id_get_subdevice(const snd_ctl_elem_id_t *obj)
Get subdevice part of a CTL element identifier.
Definition control.c:2031
snd_ctl_card_info_t
struct _snd_ctl_card_info snd_ctl_card_info_t
CTL card info container.
Definition control.h:85
snd_ctl_card_info_free
void snd_ctl_card_info_free(snd_ctl_card_info_t *obj)
Free an snd_ctl_card_info_t previously allocated using snd_ctl_card_info_malloc().
Definition control.c:2161
snd_tlv_convert_to_dB
int snd_tlv_convert_to_dB(unsigned int *tlv, long rangemin, long rangemax, long volume, long *db_gain)
Convert the given raw volume value to a dB gain.
Definition tlv.c:210
snd_ctl_event_free
void snd_ctl_event_free(snd_ctl_event_t *obj)
frees a previously allocated snd_ctl_event_t
Definition control.c:2315
snd_ctl_elem_read
int snd_ctl_elem_read(snd_ctl_t *ctl, snd_ctl_elem_value_t *data)
Get CTL element value.
Definition control.c:1013
snd_ctl_elem_id_set_index
void snd_ctl_elem_id_set_index(snd_ctl_elem_id_t *obj, unsigned int val)
Set index part for a CTL element identifier.
Definition control.c:2119
snd_async_handler_get_ctl
snd_ctl_t * snd_async_handler_get_ctl(snd_async_handler_t *handler)
Return CTL handle related to an async handler.
Definition control.c:1435
snd_ctl_elem_id_get_interface
snd_ctl_elem_iface_t snd_ctl_elem_id_get_interface(const snd_ctl_elem_id_t *obj)
Get interface part of a CTL element identifier.
Definition control.c:2009
snd_ctl_elem_list_sizeof
size_t snd_ctl_elem_list_sizeof(void)
get size of snd_ctl_elem_list_t.
Definition control.c:2355
snd_ctl_event_copy
void snd_ctl_event_copy(snd_ctl_event_t *dst, const snd_ctl_event_t *src)
copy one snd_ctl_event_t to another
Definition control.c:2334
snd_ctl_elem_info_get_max
long snd_ctl_elem_info_get_max(const snd_ctl_elem_info_t *obj)
Get maximum value from a SND_CTL_ELEM_TYPE_INTEGER CTL element id/info.
Definition control.c:2787
snd_ctl_get_dB_range
int snd_ctl_get_dB_range(snd_ctl_t *ctl, const snd_ctl_elem_id_t *id, long *min, long *max)
Get the dB min/max values on the given control element.
Definition tlv.c:465
snd_ctl_elem_list_get_numid
unsigned int snd_ctl_elem_list_get_numid(const snd_ctl_elem_list_t *obj, unsigned int idx)
Get CTL element numeric identifier for an entry of a CTL element identifiers list.
Definition control.c:2491
snd_card_next
int snd_card_next(int *card)
Iterate over physical sound cards.
Definition cards.c:108
snd_ctl_elem_remove
int snd_ctl_elem_remove(snd_ctl_t *ctl, snd_ctl_elem_id_t *id)
Remove an user CTL element.
Definition control.c:992
snd_ctl_elem_list_get_interface
snd_ctl_elem_iface_t snd_ctl_elem_list_get_interface(const snd_ctl_elem_list_t *obj, unsigned int idx)
Get interface part of CTL element identifier for an entry of a CTL element identifiers list.
Definition control.c:2504
snd_ctl_elem_list_get_id
void snd_ctl_elem_list_get_id(const snd_ctl_elem_list_t *obj, unsigned int idx, snd_ctl_elem_id_t *ptr)
Get CTL element identifier for an entry of a CTL element identifiers list.
Definition control.c:2478
snd_ctl_elem_info_is_tlv_commandable
int snd_ctl_elem_info_is_tlv_commandable(const snd_ctl_elem_info_t *obj)
Get info about TLV command possibility from a CTL element id/info.
Definition control.c:2730
snd_ctl_elem_info_copy
void snd_ctl_elem_info_copy(snd_ctl_elem_info_t *dst, const snd_ctl_elem_info_t *src)
copy one snd_ctl_elem_info_t to another
Definition control.c:2609
snd_ctl_event_type_t
snd_ctl_event_type_t
Definition control.h:260
snd_ctl_elem_info_get_item_name
const char * snd_ctl_elem_info_get_item_name(const snd_ctl_elem_info_t *obj)
Get name for selected item in a SND_CTL_ELEM_TYPE_ENUMERATED CTL element id/info.
Definition control.c:2870
snd_ctl_event_clear
void snd_ctl_event_clear(snd_ctl_event_t *obj)
clear given snd_ctl_event_t object
Definition control.c:2324
snd_ctl_elem_value_get_index
unsigned int snd_ctl_elem_value_get_index(const snd_ctl_elem_value_t *obj)
Get the identifiers 'index' part from the given element value.
Definition control.c:3337
snd_ctl_elem_value_set_name
void snd_ctl_elem_value_set_name(snd_ctl_elem_value_t *obj, const char *val)
Set the identifiers 'name' part within the given element value.
Definition control.c:3422
snd_ctl_elem_info_set_tlv_read_write
void snd_ctl_elem_info_set_tlv_read_write(snd_ctl_elem_info_t *obj, int rval, int wval)
Set TLV readability/writeability parameter of a CTL element id/info.
Definition control.c:3145
snd_ctl_elem_info_is_volatile
int snd_ctl_elem_info_is_volatile(const snd_ctl_elem_info_t *obj)
Get info about notification feasibility from a CTL element id/info.
Definition control.c:2653
snd_ctl_elem_info_is_owner
int snd_ctl_elem_info_is_owner(const snd_ctl_elem_info_t *obj)
Get info if I own an element.
Definition control.c:2686
snd_ctl_wait
int snd_ctl_wait(snd_ctl_t *ctl, int timeout)
Wait for a CTL to become ready (i.e. at least one event pending)
Definition control.c:1362
snd_ctl_elem_info_get_max64
long long snd_ctl_elem_info_get_max64(const snd_ctl_elem_info_t *obj)
Get maximum value from a SND_CTL_ELEM_TYPE_INTEGER64 CTL element id/info.
Definition control.c:2823
snd_ctl_elem_list_free_space
void snd_ctl_elem_list_free_space(snd_ctl_elem_list_t *obj)
free previously allocated space for CTL element identifiers list
Definition control.c:1765
snd_ctl_elem_list_get_subdevice
unsigned int snd_ctl_elem_list_get_subdevice(const snd_ctl_elem_list_t *obj, unsigned int idx)
Get subdevice part of CTL element identifier for an entry of a CTL element identifiers list.
Definition control.c:2530
snd_ctl_elem_id_set_name
void snd_ctl_elem_id_set_name(snd_ctl_elem_id_t *obj, const char *val)
Set name part for a CTL element identifier.
Definition control.c:2108
snd_ctl_elem_value_get_subdevice
unsigned int snd_ctl_elem_value_get_subdevice(const snd_ctl_elem_value_t *obj)
Get the identifiers 'subdevice' part from the given element value.
Definition control.c:3309
snd_ctl_event_elem_get_id
void snd_ctl_event_elem_get_id(const snd_ctl_event_t *obj, snd_ctl_elem_id_t *ptr)
Get CTL element identifier for an element related event.
Definition control.c:1789
snd_ctl_name
const char * snd_ctl_name(snd_ctl_t *ctl)
get identifier of CTL handle
Definition control.c:209
snd_ctl_elem_info_get_step
long snd_ctl_elem_info_get_step(const snd_ctl_elem_info_t *obj)
Get value step from a SND_CTL_ELEM_TYPE_INTEGER CTL element id/info.
Definition control.c:2799
snd_ctl_elem_info_set_device
void snd_ctl_elem_info_set_device(snd_ctl_elem_info_t *obj, unsigned int val)
Set device part of CTL element identifier of a CTL element id/info.
Definition control.c:3086
snd_ctl_elem_value_get_integer
long snd_ctl_elem_value_get_integer(const snd_ctl_elem_value_t *obj, unsigned int idx)
Get an element members value.
Definition control.c:3471
snd_ctl_elem_value_get_iec958
void snd_ctl_elem_value_get_iec958(const snd_ctl_elem_value_t *obj, snd_aes_iec958_t *ptr)
Get an elements IEC958 data.
Definition control.c:3672
snd_ctl_elem_value_set_enumerated
void snd_ctl_elem_value_set_enumerated(snd_ctl_elem_value_t *obj, unsigned int idx, unsigned int val)
Set an element members value.
Definition control.c:3597
snd_sctl_t
struct _snd_sctl snd_sctl_t
Definition control.h:375
snd_ctl_elem_info_set_id
void snd_ctl_elem_info_set_id(snd_ctl_elem_info_t *obj, const snd_ctl_elem_id_t *ptr)
Set CTL element identifier of a CTL element id/info.
Definition control.c:3053
snd_ctl_elem_value_set_numid
void snd_ctl_elem_value_set_numid(snd_ctl_elem_value_t *obj, unsigned int val)
Set the identifiers 'numid' part within the given element value.
Definition control.c:3366
snd_ctl_elem_info_free
void snd_ctl_elem_info_free(snd_ctl_elem_info_t *obj)
frees a previously allocated snd_ctl_elem_info_t
Definition control.c:2590
snd_ctl_elem_id_set_subdevice
void snd_ctl_elem_id_set_subdevice(snd_ctl_elem_id_t *obj, unsigned int val)
Set subdevice part for a CTL element identifier.
Definition control.c:2097
snd_ctl_elem_list_free
void snd_ctl_elem_list_free(snd_ctl_elem_list_t *obj)
frees a previously allocated snd_ctl_elem_list_t.
Definition control.c:2389
snd_ctl_elem_info_get_owner
pid_t snd_ctl_elem_info_get_owner(const snd_ctl_elem_info_t *obj)
Get owner of a locked element.
Definition control.c:2753
snd_ctl_elem_list_t
struct _snd_ctl_elem_list snd_ctl_elem_list_t
Definition control.h:159
snd_ctl_event_t
struct _snd_ctl_event snd_ctl_event_t
Definition control.h:219
snd_ctl_elem_id_get_name
const char * snd_ctl_elem_id_get_name(const snd_ctl_elem_id_t *obj)
Get name part of a CTL element identifier.
Definition control.c:2042
snd_ctl_type_t
snd_ctl_type_t
Definition control.h:343
snd_ctl_add_enumerated_elem_set
int snd_ctl_add_enumerated_elem_set(snd_ctl_t *ctl, snd_ctl_elem_info_t *info, unsigned int element_count, unsigned int member_count, unsigned int items, const char *const labels[])
Create and add some user-defined control elements of enumerated type.
Definition control.c:768
snd_ctl_elem_add_integer
int snd_ctl_elem_add_integer(snd_ctl_t *ctl, const snd_ctl_elem_id_t *id, unsigned int count, long imin, long imax, long istep)
Create and add an user-defined control element of integer type.
Definition control.c:867
snd_ctl_elem_value_set_boolean
void snd_ctl_elem_value_set_boolean(snd_ctl_elem_value_t *obj, unsigned int idx, long val)
Set an element members value.
Definition control.c:3543
snd_ctl_elem_id_malloc
int snd_ctl_elem_id_malloc(snd_ctl_elem_id_t **ptr)
allocate an invalid snd_ctl_elem_id_t using standard malloc
Definition control.c:1890
snd_ctl_elem_value_get_interface
snd_ctl_elem_iface_t snd_ctl_elem_value_get_interface(const snd_ctl_elem_value_t *obj)
Get the identifiers 'interface' part from the given element value.
Definition control.c:3281
snd_ctl_elem_info
int snd_ctl_elem_info(snd_ctl_t *ctl, snd_ctl_elem_info_t *info)
Get CTL element information.
Definition control.c:425
snd_ctl_elem_value_get_boolean
int snd_ctl_elem_value_get_boolean(const snd_ctl_elem_value_t *obj, unsigned int idx)
Get an element members value.
Definition control.c:3453
snd_ctl_elem_id_compare_set
int snd_ctl_elem_id_compare_set(const snd_ctl_elem_id_t *id1, const snd_ctl_elem_id_t *id2)
compare one snd_ctl_elem_id_t to another
Definition control.c:1969
snd_ctl_elem_value_set_subdevice
void snd_ctl_elem_value_set_subdevice(snd_ctl_elem_value_t *obj, unsigned int val)
Set the identifiers 'subdevice' part within the given element value.
Definition control.c:3408
snd_ctl_elem_info_get_count
unsigned int snd_ctl_elem_info_get_count(const snd_ctl_elem_info_t *obj)
Get number of value entries from a CTL element id/info.
Definition control.c:2764
snd_ctl_elem_add_integer64
int snd_ctl_elem_add_integer64(snd_ctl_t *ctl, const snd_ctl_elem_id_t *id, unsigned int count, long long imin, long long imax, long long istep)
Create and add an user-defined control element of integer64 type.
Definition control.c:888
snd_ctl_event_elem_get_subdevice
unsigned int snd_ctl_event_elem_get_subdevice(const snd_ctl_event_t *obj)
Get subdevice part of CTL element identifier for an element related event.
Definition control.c:1837
snd_ctl_elem_tlv_write
int snd_ctl_elem_tlv_write(snd_ctl_t *ctl, const snd_ctl_elem_id_t *id, const unsigned int *tlv)
Write structured data from given buffer to an element set.
Definition control.c:1120
snd_ctl_card_info
int snd_ctl_card_info(snd_ctl_t *ctl, snd_ctl_card_info_t *info)
Get information about the sound card.
Definition control.c:385
snd_ctl_elem_value_free
void snd_ctl_elem_value_free(snd_ctl_elem_value_t *obj)
Free an snd_ctl_elem_value_t previously allocated using snd_ctl_elem_value_malloc().
Definition control.c:3201
snd_ctl_elem_info_is_tlv_readable
int snd_ctl_elem_info_is_tlv_readable(const snd_ctl_elem_info_t *obj)
Get info about TLV readability from a CTL element id/info.
Definition control.c:2708
snd_ctl_poll_descriptors
int snd_ctl_poll_descriptors(snd_ctl_t *ctl, struct pollfd *pfds, unsigned int space)
get poll descriptors
Definition control.c:326
snd_ctl_elem_value_set_id
void snd_ctl_elem_value_set_id(snd_ctl_elem_value_t *obj, const snd_ctl_elem_id_t *ptr)
Set the element identifier within the given element value.
Definition control.c:3352
snd_ctl_elem_info_set_subdevice
void snd_ctl_elem_info_set_subdevice(snd_ctl_elem_info_t *obj, unsigned int val)
Set subdevice part of CTL element identifier of a CTL element id/info.
Definition control.c:3097
snd_ctl_convert_to_dB
int snd_ctl_convert_to_dB(snd_ctl_t *ctl, const snd_ctl_elem_id_t *id, long volume, long *db_gain)
Convert the volume value to dB on the given control element.
Definition tlv.c:486
snd_ctl_poll_descriptors_revents
int snd_ctl_poll_descriptors_revents(snd_ctl_t *ctl, struct pollfd *pfds, unsigned int nfds, unsigned short *revents)
get returned events from poll descriptors
Definition control.c:349
snd_ctl_subscribe_events
int snd_ctl_subscribe_events(snd_ctl_t *ctl, int subscribe)
Ask to be informed about events (poll, snd_async_add_ctl_handler, snd_ctl_read)
Definition control.c:367
snd_ctl_elem_list_malloc
int snd_ctl_elem_list_malloc(snd_ctl_elem_list_t **ptr)
allocate a snd_ctl_elem_list_t using standard malloc.
Definition control.c:2368
snd_ctl_elem_type_name
const char * snd_ctl_elem_type_name(snd_ctl_elem_type_t type)
get name of a CTL element type
Definition control.c:1706
snd_ctl_elem_list
int snd_ctl_elem_list(snd_ctl_t *ctl, snd_ctl_elem_list_t *list)
Get a list of element identifiers.
Definition control.c:412
snd_ctl_elem_list_copy
void snd_ctl_elem_list_copy(snd_ctl_elem_list_t *dst, const snd_ctl_elem_list_t *src)
copy one snd_ctl_elem_list_t to another.
Definition control.c:2420
snd_ctl_elem_value_get_bytes
const void * snd_ctl_elem_value_get_bytes(const snd_ctl_elem_value_t *obj)
Get the data stored within the element.
Definition control.c:3654
snd_card_load
int snd_card_load(int card)
Try to load the driver for a card.
Definition cards.c:83
snd_ctl_elem_info_is_readable
int snd_ctl_elem_info_is_readable(const snd_ctl_elem_info_t *obj)
Get info about readability from a CTL element id/info.
Definition control.c:2631
snd_ctl_elem_info_get_items
unsigned int snd_ctl_elem_info_get_items(const snd_ctl_elem_info_t *obj)
Get number of items available from a SND_CTL_ELEM_TYPE_ENUMERATED CTL element id/info.
Definition control.c:2847
snd_ctl_elem_value_set_integer
void snd_ctl_elem_value_set_integer(snd_ctl_elem_value_t *obj, unsigned int idx, long val)
Set an element members value.
Definition control.c:3561
snd_ctl_elem_info_get_numid
unsigned int snd_ctl_elem_info_get_numid(const snd_ctl_elem_info_t *obj)
Get element numeric identifier of a CTL element id/info.
Definition control.c:2987
snd_ctl_elem_info_get_interface
snd_ctl_elem_iface_t snd_ctl_elem_info_get_interface(const snd_ctl_elem_info_t *obj)
Get interface part of CTL element identifier of a CTL element id/info.
Definition control.c:2998
snd_ctl_elem_value_get_device
unsigned int snd_ctl_elem_value_get_device(const snd_ctl_elem_value_t *obj)
Get the identifiers 'device' part from the given element value.
Definition control.c:3295
snd_ctl_card_info_copy
void snd_ctl_card_info_copy(snd_ctl_card_info_t *dst, const snd_ctl_card_info_t *src)
Bitwise copy of a snd_ctl_card_info_t object.
Definition control.c:2184
snd_ctl_elem_type_t
snd_ctl_elem_type_t
Definition control.h:222
snd_ctl_elem_info_get_min
long snd_ctl_elem_info_get_min(const snd_ctl_elem_info_t *obj)
Get minimum value from a SND_CTL_ELEM_TYPE_INTEGER CTL element id/info.
Definition control.c:2775
snd_ctl_elem_write
int snd_ctl_elem_write(snd_ctl_t *ctl, snd_ctl_elem_value_t *data)
Set CTL element value.
Definition control.c:1034
snd_ctl_elem_info_set_index
void snd_ctl_elem_info_set_index(snd_ctl_elem_info_t *obj, unsigned int val)
Set index part of CTL element identifier of a CTL element id/info.
Definition control.c:3119
snd_ctl_add_integer_elem_set
int snd_ctl_add_integer_elem_set(snd_ctl_t *ctl, snd_ctl_elem_info_t *info, unsigned int element_count, unsigned int member_count, long min, long max, long step)
Create and add some user-defined control elements of integer type.
Definition control.c:551
snd_ctl_elem_info_is_tlv_writable
int snd_ctl_elem_info_is_tlv_writable(const snd_ctl_elem_info_t *obj)
Get info about TLV writeability from a CTL element id/info.
Definition control.c:2719
snd_tlv_get_dB_range
int snd_tlv_get_dB_range(unsigned int *tlv, long rangemin, long rangemax, long *min, long *max)
Get the dB min/max values.
Definition tlv.c:138
snd_ctl_elem_id_clear
void snd_ctl_elem_id_clear(snd_ctl_elem_id_t *obj)
clear given snd_ctl_elem_id_t object
Definition control.c:1912
snd_ctl_card_info_get_driver
const char * snd_ctl_card_info_get_driver(const snd_ctl_card_info_t *obj)
Get the sound card driver from the given info object.
Definition control.c:2226
snd_card_get_name
int snd_card_get_name(int card, char **name)
Obtain the card name.
Definition cards.c:192
snd_ctl_elem_value_get_id
void snd_ctl_elem_value_get_id(const snd_ctl_elem_value_t *obj, snd_ctl_elem_id_t *ptr)
Get the element identifier from the given element value.
Definition control.c:3253
snd_ctl_elem_value_compare
int snd_ctl_elem_value_compare(snd_ctl_elem_value_t *left, const snd_ctl_elem_value_t *right)
Compare two snd_ctl_elem_value_t values, bytewise.
Definition control.c:3237
snd_ctl_elem_add_boolean
int snd_ctl_elem_add_boolean(snd_ctl_t *ctl, const snd_ctl_elem_id_t *id, unsigned int count)
Create and add an user-defined control element of boolean type.
Definition control.c:909
snd_ctl_elem_id_t
struct _snd_ctl_elem_id snd_ctl_elem_id_t
Definition control.h:88
snd_ctl_poll_descriptors_count
int snd_ctl_poll_descriptors_count(snd_ctl_t *ctl)
get count of poll descriptors for CTL handle
Definition control.c:309
snd_ctl_elem_info_set_inactive
void snd_ctl_elem_info_set_inactive(snd_ctl_elem_info_t *obj, int val)
Set inactive parameter of a CTL element id/info.
Definition control.c:3158
snd_ctl_elem_list_set_offset
void snd_ctl_elem_list_set_offset(snd_ctl_elem_list_t *obj, unsigned int val)
Set index of first wanted CTL element identifier in a CTL element identifiers list.
Definition control.c:2431
snd_ctl_event_elem_get_numid
unsigned int snd_ctl_event_elem_get_numid(const snd_ctl_event_t *obj)
Get element numeric identifier for an element related event.
Definition control.c:1801
snd_ctl_elem_info_get_subdevice
unsigned int snd_ctl_elem_info_get_subdevice(const snd_ctl_elem_info_t *obj)
Get subdevice part of CTL element identifier of a CTL element id/info.
Definition control.c:3020
snd_ctl_get_power_state
int snd_ctl_get_power_state(snd_ctl_t *ctl, unsigned int *state)
Get actual Power State.
Definition control.c:1336
snd_ctl_elem_id_compare_numid
int snd_ctl_elem_id_compare_numid(const snd_ctl_elem_id_t *id1, const snd_ctl_elem_id_t *id2)
compare one snd_ctl_elem_id_t to another using numid
Definition control.c:1939
snd_ctl_event_elem_get_index
unsigned int snd_ctl_event_elem_get_index(const snd_ctl_event_t *obj)
Get index part of CTL element identifier for an element related event.
Definition control.c:1861
snd_ctl_elem_list_get_device
unsigned int snd_ctl_elem_list_get_device(const snd_ctl_elem_list_t *obj, unsigned int idx)
Get the device part of CTL element identifier for an entry of a CTL element identifiers list.
Definition control.c:2517
snd_ctl_elem_id_get_index
unsigned int snd_ctl_elem_id_get_index(const snd_ctl_elem_id_t *obj)
Get index part of a CTL element identifier.
Definition control.c:2053
snd_ctl_event_elem_get_interface
snd_ctl_elem_iface_t snd_ctl_event_elem_get_interface(const snd_ctl_event_t *obj)
Get interface part of CTL element identifier for an element related event.
Definition control.c:1813
snd_ctl_card_info_get_longname
const char * snd_ctl_card_info_get_longname(const snd_ctl_card_info_t *obj)
Get the sound cards long name from the given info object.
Definition control.c:2254
snd_ctl_elem_value_set_integer64
void snd_ctl_elem_value_set_integer64(snd_ctl_elem_value_t *obj, unsigned int idx, long long val)
Set an element members value.
Definition control.c:3579
snd_ctl_elem_value_set_iec958
void snd_ctl_elem_value_set_iec958(snd_ctl_elem_value_t *obj, const snd_aes_iec958_t *ptr)
Set an elements IEC958 data.
Definition control.c:3690
snd_ctl_elem_info_set_dimension
int snd_ctl_elem_info_set_dimension(snd_ctl_elem_info_t *info, const int dimension[4])
Set width to a specified dimension level of given element information.
Definition control.c:2949
snd_ctl_elem_id_sizeof
size_t snd_ctl_elem_id_sizeof(void)
get size of snd_ctl_elem_id_t
Definition control.c:1880
snd_ctl_add_bytes_elem_set
int snd_ctl_add_bytes_elem_set(snd_ctl_t *ctl, snd_ctl_elem_info_t *info, unsigned int element_count, unsigned int member_count)
Create and add some user-defined control elements of bytes type.
Definition control.c:848
snd_ctl_elem_value_get_enumerated
unsigned int snd_ctl_elem_value_get_enumerated(const snd_ctl_elem_value_t *obj, unsigned int idx)
Get an element members value.
Definition control.c:3507
snd_ctl_close
int snd_ctl_close(snd_ctl_t *ctl)
close CTL handle
Definition control.c:236
snd_ctl_elem_unlock
int snd_ctl_elem_unlock(snd_ctl_t *ctl, snd_ctl_elem_id_t *id)
Unlock CTL element.
Definition control.c:1171
snd_ctl_event_elem_get_device
unsigned int snd_ctl_event_elem_get_device(const snd_ctl_event_t *obj)
Get device part of CTL element identifier for an element related event.
Definition control.c:1825
snd_ctl_event_type_name
const char * snd_ctl_event_type_name(snd_ctl_event_type_t type)
get name of a CTL event type
Definition control.c:1728
snd_ctl_card_info_get_mixername
const char * snd_ctl_card_info_get_mixername(const snd_ctl_card_info_t *obj)
Get the sound card mixer name from the given info object.
Definition control.c:2268
snd_ctl_type
snd_ctl_type_t snd_ctl_type(snd_ctl_t *ctl)
get type of CTL handle
Definition control.c:222
snd_ctl_add_boolean_elem_set
int snd_ctl_add_boolean_elem_set(snd_ctl_t *ctl, snd_ctl_elem_info_t *info, unsigned int element_count, unsigned int member_count)
Create and add some user-defined control elements of boolean type.
Definition control.c:711
SND_CTL_ELEM_IFACE_CARD
@ SND_CTL_ELEM_IFACE_CARD
Definition control.h:243
SND_CTL_ELEM_IFACE_PCM
@ SND_CTL_ELEM_IFACE_PCM
Definition control.h:249
SND_CTL_ELEM_IFACE_SEQUENCER
@ SND_CTL_ELEM_IFACE_SEQUENCER
Definition control.h:255
SND_CTL_ELEM_IFACE_RAWMIDI
@ SND_CTL_ELEM_IFACE_RAWMIDI
Definition control.h:251
SND_CTL_ELEM_IFACE_HWDEP
@ SND_CTL_ELEM_IFACE_HWDEP
Definition control.h:245
SND_CTL_ELEM_IFACE_TIMER
@ SND_CTL_ELEM_IFACE_TIMER
Definition control.h:253
SND_CTL_ELEM_IFACE_MIXER
@ SND_CTL_ELEM_IFACE_MIXER
Definition control.h:247
SND_CTL_EVENT_ELEM
@ SND_CTL_EVENT_ELEM
Definition control.h:262
SND_CTL_TYPE_INET
@ SND_CTL_TYPE_INET
Definition control.h:349
SND_CTL_TYPE_EXT
@ SND_CTL_TYPE_EXT
Definition control.h:351
SND_CTL_TYPE_REMAP
@ SND_CTL_TYPE_REMAP
Definition control.h:353
SND_CTL_TYPE_HW
@ SND_CTL_TYPE_HW
Definition control.h:345
SND_CTL_TYPE_SHM
@ SND_CTL_TYPE_SHM
Definition control.h:347
SND_CTL_ELEM_TYPE_INTEGER
@ SND_CTL_ELEM_TYPE_INTEGER
Definition control.h:228
SND_CTL_ELEM_TYPE_NONE
@ SND_CTL_ELEM_TYPE_NONE
Definition control.h:224
SND_CTL_ELEM_TYPE_INTEGER64
@ SND_CTL_ELEM_TYPE_INTEGER64
Definition control.h:236
SND_CTL_ELEM_TYPE_IEC958
@ SND_CTL_ELEM_TYPE_IEC958
Definition control.h:234
SND_CTL_ELEM_TYPE_BOOLEAN
@ SND_CTL_ELEM_TYPE_BOOLEAN
Definition control.h:226
SND_CTL_ELEM_TYPE_ENUMERATED
@ SND_CTL_ELEM_TYPE_ENUMERATED
Definition control.h:230
SND_CTL_ELEM_TYPE_BYTES
@ SND_CTL_ELEM_TYPE_BYTES
Definition control.h:232
snd_async_handler_t
struct _snd_async_handler snd_async_handler_t
Internal structure for an async notification client handler.
Definition global.h:118
snd_async_callback_t
void(* snd_async_callback_t)(snd_async_handler_t *handler)
Async notification callback.
Definition global.h:125
snd_hctl_handle_events
int snd_hctl_handle_events(snd_hctl_t *hctl)
Handle pending HCTL events invoking callbacks.
Definition hcontrol.c:779
snd_hctl_find_elem
snd_hctl_elem_t * snd_hctl_find_elem(snd_hctl_t *hctl, const snd_ctl_elem_id_t *id)
Search an HCTL element.
Definition hcontrol.c:551
snd_hctl_last_elem
snd_hctl_elem_t * snd_hctl_last_elem(snd_hctl_t *hctl)
get last element for an HCTL
Definition hcontrol.c:511
snd_hctl_name
const char * snd_hctl_name(snd_hctl_t *hctl)
get identifier of HCTL handle
Definition hcontrol.c:130
snd_hctl_get_count
unsigned int snd_hctl_get_count(snd_hctl_t *hctl)
Get number of loaded elements for an HCTL.
Definition hcontrol.c:662
snd_hctl_get_callback_private
void * snd_hctl_get_callback_private(snd_hctl_t *hctl)
Get callback private value for an HCTL.
Definition hcontrol.c:651
snd_hctl_t
struct _snd_hctl snd_hctl_t
Definition control.h:709
snd_hctl_free
int snd_hctl_free(snd_hctl_t *hctl)
free HCTL loaded elements
Definition hcontrol.c:402
snd_hctl_open
int snd_hctl_open(snd_hctl_t **hctl, const char *name, int mode)
Opens an HCTL.
Definition hcontrol.c:70
snd_hctl_wait
int snd_hctl_wait(snd_hctl_t *hctl, int timeout)
Wait for a HCTL to become ready (i.e. at least one event pending)
Definition hcontrol.c:675
snd_hctl_poll_descriptors_count
int snd_hctl_poll_descriptors_count(snd_hctl_t *hctl)
get count of poll descriptors for HCTL handle
Definition hcontrol.c:168
snd_hctl_nonblock
int snd_hctl_nonblock(snd_hctl_t *hctl, int nonblock)
set nonblock mode
Definition hcontrol.c:142
snd_hctl_elem_tlv_read
int snd_hctl_elem_tlv_read(snd_hctl_elem_t *elem, unsigned int *tlv, unsigned int tlv_size)
Get TLV value for an HCTL element.
Definition hcontrol.c:853
snd_hctl_open_ctl
int snd_hctl_open_ctl(snd_hctl_t **hctlp, snd_ctl_t *ctl)
Opens an HCTL.
Definition hcontrol.c:89
snd_hctl_elem_get_hctl
snd_hctl_t * snd_hctl_elem_get_hctl(snd_hctl_elem_t *elem)
Get HCTL handle for an HCTL element.
Definition hcontrol.c:898
snd_hctl_set_compare
int snd_hctl_set_compare(snd_hctl_t *hctl, snd_hctl_compare_t hsort)
Change HCTL compare function and reorder elements.
Definition hcontrol.c:448
snd_hctl_callback_t
int(* snd_hctl_callback_t)(snd_hctl_t *hctl, unsigned int mask, snd_hctl_elem_t *elem)
HCTL callback function.
Definition control.h:728
snd_hctl_compare_t
int(* snd_hctl_compare_t)(const snd_hctl_elem_t *e1, const snd_hctl_elem_t *e2)
Compare function for sorting HCTL elements.
Definition control.h:717
snd_hctl_elem_callback_t
int(* snd_hctl_elem_callback_t)(snd_hctl_elem_t *elem, unsigned int mask)
HCTL element callback function.
Definition control.h:737
snd_hctl_load
int snd_hctl_load(snd_hctl_t *hctl)
Load an HCTL with all elements and sort them.
Definition hcontrol.c:565
snd_hctl_poll_descriptors_revents
int snd_hctl_poll_descriptors_revents(snd_hctl_t *ctl, struct pollfd *pfds, unsigned int nfds, unsigned short *revents)
get returned events from poll descriptors
Definition hcontrol.c:195
snd_hctl_poll_descriptors
int snd_hctl_poll_descriptors(snd_hctl_t *hctl, struct pollfd *pfds, unsigned int space)
get poll descriptors
Definition hcontrol.c:181
snd_hctl_elem_read
int snd_hctl_elem_read(snd_hctl_elem_t *elem, snd_ctl_elem_value_t *value)
Get value for an HCTL element.
Definition hcontrol.c:820
snd_hctl_elem_get_subdevice
unsigned int snd_hctl_elem_get_subdevice(const snd_hctl_elem_t *obj)
Get subdevice part of CTL element identifier of a CTL element id/value.
Definition hcontrol.c:953
snd_hctl_elem_next
snd_hctl_elem_t * snd_hctl_elem_next(snd_hctl_elem_t *elem)
get next HCTL element
Definition hcontrol.c:524
snd_hctl_ctl
snd_ctl_t * snd_hctl_ctl(snd_hctl_t *hctl)
Get a ctl handle associated to the given hctl handle.
Definition hcontrol.c:724
snd_hctl_elem_get_name
const char * snd_hctl_elem_get_name(const snd_hctl_elem_t *obj)
Get name part of CTL element identifier of a CTL element id/value.
Definition hcontrol.c:964
snd_hctl_set_callback
void snd_hctl_set_callback(snd_hctl_t *hctl, snd_hctl_callback_t callback)
Set callback function for an HCTL.
Definition hcontrol.c:629
snd_hctl_elem_get_index
unsigned int snd_hctl_elem_get_index(const snd_hctl_elem_t *obj)
Get index part of CTL element identifier of a CTL element id/value.
Definition hcontrol.c:975
snd_hctl_elem_set_callback_private
void snd_hctl_elem_set_callback_private(snd_hctl_elem_t *obj, void *val)
Set callback private value for an HCTL element.
Definition hcontrol.c:997
snd_hctl_compare_fast
int snd_hctl_compare_fast(const snd_hctl_elem_t *c1, const snd_hctl_elem_t *c2)
A "don't care" fast compare functions that may be used with snd_hctl_set_compare.
Definition hcontrol.c:462
snd_hctl_elem_get_callback_private
void * snd_hctl_elem_get_callback_private(const snd_hctl_elem_t *obj)
Get callback private value for an HCTL element.
Definition hcontrol.c:1008
snd_hctl_elem_tlv_write
int snd_hctl_elem_tlv_write(snd_hctl_elem_t *elem, const unsigned int *tlv)
Set TLV value for an HCTL element.
Definition hcontrol.c:869
snd_hctl_elem_get_interface
snd_ctl_elem_iface_t snd_hctl_elem_get_interface(const snd_hctl_elem_t *obj)
Get interface part of CTL element identifier of a CTL element id/value.
Definition hcontrol.c:931
snd_hctl_elem_get_id
void snd_hctl_elem_get_id(const snd_hctl_elem_t *obj, snd_ctl_elem_id_t *ptr)
Get CTL element identifier of a CTL element id/value.
Definition hcontrol.c:909
snd_hctl_elem_prev
snd_hctl_elem_t * snd_hctl_elem_prev(snd_hctl_elem_t *elem)
get previous HCTL element
Definition hcontrol.c:537
snd_hctl_elem_set_callback
void snd_hctl_elem_set_callback(snd_hctl_elem_t *obj, snd_hctl_elem_callback_t val)
Set callback function for an HCTL element.
Definition hcontrol.c:986
snd_hctl_elem_t
struct _snd_hctl_elem snd_hctl_elem_t
Definition control.h:706
snd_hctl_elem_info
int snd_hctl_elem_info(snd_hctl_elem_t *elem, snd_ctl_elem_info_t *info)
Get information for an HCTL element.
Definition hcontrol.c:805
snd_hctl_elem_get_numid
unsigned int snd_hctl_elem_get_numid(const snd_hctl_elem_t *obj)
Get element numeric identifier of a CTL element id/value.
Definition hcontrol.c:920
snd_hctl_set_callback_private
void snd_hctl_set_callback_private(snd_hctl_t *hctl, void *data)
Set callback private value for an HCTL.
Definition hcontrol.c:640
snd_hctl_elem_get_device
unsigned int snd_hctl_elem_get_device(const snd_hctl_elem_t *obj)
Get device part of CTL element identifier of a CTL element id/value.
Definition hcontrol.c:942
snd_hctl_close
int snd_hctl_close(snd_hctl_t *hctl)
close HCTL handle
Definition hcontrol.c:111
snd_hctl_elem_tlv_command
int snd_hctl_elem_tlv_command(snd_hctl_elem_t *elem, const unsigned int *tlv)
Set TLV value for an HCTL element.
Definition hcontrol.c:885
snd_hctl_first_elem
snd_hctl_elem_t * snd_hctl_first_elem(snd_hctl_t *hctl)
get first element for an HCTL
Definition hcontrol.c:498
snd_hctl_elem_write
int snd_hctl_elem_write(snd_hctl_elem_t *elem, snd_ctl_elem_value_t *value)
Set value for an HCTL element.
Definition hcontrol.c:837
snd_device_name_free_hint
int snd_device_name_free_hint(void **hints)
Free a list of device name hints.
Definition namehint.c:686
snd_device_name_hint
int snd_device_name_hint(int card, const char *iface, void ***hints)
Get a set of device name hints.
Definition namehint.c:585
snd_device_name_get_hint
char * snd_device_name_get_hint(const void *hint, const char *id)
Extract a value from a hint.
Definition namehint.c:714
snd_hwdep_info_t
struct _snd_hwdep_info snd_hwdep_info_t
Definition hwdep.h:51
snd_pcm_info_t
struct _snd_pcm_info snd_pcm_info_t
Definition pcm.h:52
snd_ump_block_info_t
struct snd_ump_block_info snd_ump_block_info_t
Definition ump.h:33
snd_rawmidi_info_t
struct _snd_rawmidi_info snd_rawmidi_info_t
Definition rawmidi.h:51
snd_ump_endpoint_info_t
struct snd_ump_endpoint_info snd_ump_endpoint_info_t
Definition ump.h:31
snd_sctl_remove
int snd_sctl_remove(snd_sctl_t *handle)
Remove (restore) previous values from control elements.
Definition setup.c:181
snd_sctl_build
int snd_sctl_build(snd_sctl_t **ctl, snd_ctl_t *handle, snd_config_t *config, snd_config_t *private_data, int mode)
Build setup control handle.
Definition setup.c:604
snd_sctl_install
int snd_sctl_install(snd_sctl_t *handle)
Install given values to control elements.
Definition setup.c:83
snd_sctl_free
int snd_sctl_free(snd_sctl_t *handle)
Free setup control handle.
Definition setup.c:645
snd_aes_iec958_t
Definition control.h:52
snd_aes_iec958_t::pad
unsigned char pad
Definition control.h:55
data
uint8_t data
Definition ump_msg.h:6
type
uint8_t type
Definition ump_msg.h:1
status
uint8_t status
Definition ump_msg.h:3